{
 "as_of": "2026-11-08",
 "cmr": "us-cm-kg/NYSE/SO",
 "fence": "The page is the record's research on the issuer — no analyst, no rating, no view.",
 "markdown": "The page is the record's research on the issuer — no analyst, no rating, no view.\n\n# SOUTHERN CO (NYSE: SO) — research page\n\nAs of 2026-11-08 · us-cm-kg · record version 1\n\n## Identity and listing\n\nThe issuer is SOUTHERN CO, listed on NYSE under ticker SO, with ISIN US8425871071 and LEI 549300FC3G3YU2FBZD92. Its security type is Corporate, its sector is 4911 Electric Services, and its jurisdiction is United States — Delaware. Its segment is not on the record. Its listing status is listed, not halted.\n\n## The disclosure read\n\nThe record holds 150 filings in the twelve months to 2026-11-08, across 55 filing days. The median gap between filing days is 3.0 days. The latest filing is dated 2026-11-06, two days before the record date, and is of type regulatory_filing. Across NYSE the median cadence gap is 6.0 days, the median filings are 64.0, and the median latency is 4.0 days. Across 4911 Electric Services the median cadence gap is 4.5 days, the median filings are 73.0, and the median latency is 4.0 days. The filings by type are 100 directors_dealings, 23 regulatory_filing, 8 corporate_news, 8 results, 5 agm_egm, 4 prospectus, 1 ad_hoc, and 1 director_change.\n\n## Auditor\n\nThe auditor of record is not on the record, because the latest annual report cover carries no dei:AuditorName tag, and its location is not on the record. The record holds no auditor changes.\n\n## Events and halts\n\nThe record holds listing lines dated 2025-11-06 and 2025-11-07. It holds no delisting, no name change, and no segment move; the segment move is not on the record because the exchanges' tier transfers are not EDGAR filings. The domicile change is not on the record, because EDGAR states no dated change of state of incorporation on a filing line. The halt flag reads listed, not halted.\n\n## Orderability\n\nThe orderability outcome is not determinable. The chapter's orderability section carries no client categories, so the outcome cannot name its client category. The rule version is acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1, and the chapter is as of 2026-11-04.\n\n## Coverage\n\nThe issuer's investor-relations page names 22 research houses: Argus Research, Barclays, BMO Capital Markets, BTIG, Citi, Evercore ISI, Goldman Sachs, Jefferies, J.P. Morgan, KeyBanc Capital Markets, Ladenburg Thalmann, Mizuho Securities, Morgan Stanley, Morningstar, Raymond James, RBC Capital Markets, Scotiabank, Seaport Global Securities, T.D. Securities, UBS, Wells Fargo, and Wolfe Research.\n\n## Open research\n\nNo openly published research notes were found on the record.\n\n## Licensed\n\nLicensed research: none loaded. A licensed row is served only to an agent whose firm holds that licence (licensor, entitlement). No licensed row is loaded.\n\n## As-of depth\n\nThe record holds the issuer's sealed years 2021, 2022, 2023, 2024, 2025, and 2026. The market's vintage is sealed, with an earliest sealed date of 2021-01-04. The live record began on 2026-09-12.\n\n## Sources\n\n9 source pages are named on this page; every value above carries its own source page and read date in the numbers.\n\n- https://www.sec.gov/files/company_tickers_exchange.json (identity.exchange)\n- https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data (identity.isin)\n- https://data.sec.gov/submissions/CIK0000092122.json (identity.jurisdiction)\n- https://mapping.gleif.org/api/v2/isin-lei/latest/download (identity.lei)\n- https://mcp.us-cm-kg.ai/events/NYSE/SO (the disclosure lines)\n- https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts (the halt flag)\n- https://mcp.us-cm-kg.ai/book/aio.json (the orderability chapter)\n- https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx (coverage)\n- https://mcp.us-cm-kg.ai/record/NYSE/SO (the record)\n",
 "market": "US",
 "node": "us-cm-kg",
 "numbers": {
  "as_of_depth": {
   "issuer_years_sealed": [
    "2021",
    "2022",
    "2023",
    "2024",
    "2025",
    "2026"
   ],
   "live_record_began": "2026-09-12",
   "node_history_from": "2021-01-04",
   "node_years_sealed": [
    "2021",
    "2022",
    "2023",
    "2024",
    "2025",
    "2026"
   ],
   "record_version": 1,
   "sealed": true
  },
  "auditor": {
   "auditor": {
    "market": "US",
    "reason": "no dei:AuditorName tag on the latest annual report cover (foreign private issuers and older filings carry none)",
    "state": "not_on_record"
   },
   "auditor_firm_id": {
    "market": "US",
    "state": "not_on_record"
   },
   "auditor_location": {
    "market": "US",
    "state": "not_on_record"
   },
   "changes": []
  },
  "cmr": "us-cm-kg/NYSE/SO",
  "coverage": {
   "count": 22,
   "houses": [
    {
     "analyst": "Marie Ferguson",
     "house": "Argus Research",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Nick Campanella",
     "house": "Barclays",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "James Thalacker",
     "house": "BMO Capital Markets",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Alex Kania",
     "house": "BTIG",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Ryan Levine",
     "house": "Citi",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Nick Amicucci",
     "house": "Evercore ISI",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Carly Davenport",
     "house": "Goldman Sachs",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Julien Dumoulin-Smith",
     "house": "Jefferies",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Jeremy Tonet",
     "house": "J.P. Morgan",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Sophie Karp",
     "house": "KeyBanc Capital Markets",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Paul Fremont",
     "house": "Ladenburg Thalmann",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Anthony Crowdell",
     "house": "Mizuho Securities",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "David Arcaro",
     "house": "Morgan Stanley",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Travis Miller",
     "house": "Morningstar",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "J.R. Weston",
     "house": "Raymond James",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Stephen D'Ambrisi",
     "house": "RBC Capital Markets",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Andrew Weisel",
     "house": "Scotiabank",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Angie Storozynski",
     "house": "Seaport Global Securities",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Shelby Tucker",
     "house": "T.D. Securities",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Bill Appicelli",
     "house": "UBS",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Shar Pourreza",
     "house": "Wells Fargo",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    },
    {
     "analyst": "Steve Fleishman",
     "house": "Wolfe Research",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "state": "sourced"
    }
   ],
   "pages_checked": [
    {
     "page": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx",
     "result": "read: 22 of 46 named houses found on the page"
    }
   ],
   "read_by": "Perplexity sonar (search) · page read by this rail",
   "read_date": "2026-11-11",
   "since": "not stated on the page read",
   "state": "found"
  },
  "disclosure": {
   "against": {
    "exchange": {
     "issuers": 3256,
     "median_cadence_gap_days": 6,
     "median_filings": 64,
     "median_latency_days": 4,
     "name": "NYSE"
    },
    "sector": {
     "issuers": 94,
     "median_cadence_gap_days": 4.5,
     "median_filings": 73,
     "median_latency_days": 4,
     "name": "4911 Electric Services"
    }
   },
   "by_type": {
    "ad_hoc": 1,
    "agm_egm": 5,
    "corporate_news": 8,
    "director_change": 1,
    "directors_dealings": 100,
    "prospectus": 4,
    "regulatory_filing": 23,
    "results": 8
   },
   "cadence_median_gap_days": 3,
   "filing_days": 55,
   "filings": 150,
   "latency_days": 2,
   "latest": [
    {
     "category": "144",
     "date": "2026-11-06",
     "source": "https://www.sec.gov/Archives/edgar/data/92122/000162828026071674/xsl144X01/primary_doc.xml",
     "title": "144",
     "type": "regulatory_filing"
    },
    {
     "category": "8-K",
     "date": "2026-11-05",
     "source": "https://www.sec.gov/Archives/edgar/data/92122/000009212226000071/so-20261105.htm",
     "title": "8-K — 8-K (items 2.02)",
     "type": "results"
    },
    {
     "category": "10-Q",
     "date": "2026-11-05",
     "source": "https://www.sec.gov/Archives/edgar/data/92122/000009212226000069/so-20260930.htm",
     "title": "10-Q — 10-Q",
     "type": "results"
    },
    {
     "category": "4",
     "date": "2026-11-03",
     "source": "https://www.sec.gov/Archives/edgar/data/92122/000119312526445141/xslF345X06/ownership.xml",
     "title": "4 — 4",
     "type": "directors_dealings"
    },
    {
     "category": "144",
     "date": "2026-11-02",
     "source": "https://www.sec.gov/Archives/edgar/data/92122/000162828026068864/xsl144X01/primary_doc.xml",
     "title": "144",
     "type": "regulatory_filing"
    }
   ],
   "latest_filing_date": "2026-11-06",
   "read": "the node's event lines (list_events_since), as get_filings serves them",
   "source": "https://mcp.us-cm-kg.ai/events/NYSE/SO",
   "window": {
    "from": "2025-11-08",
    "to": "2026-11-08"
   }
  },
  "identity": {
   "exchange": {
    "read_by": "EDGAR company_tickers_exchange.json (SEC list of exchange-listed filers)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://www.sec.gov/files/company_tickers_exchange.json",
    "state": "sourced",
    "value": "NYSE"
   },
   "isin": {
    "read_by": "SEC Fails-to-Deliver data (CUSIP for the symbol) · ISIN = US + CUSIP + ISO 6166 check digit",
    "read_date": "2026-10-09",
    "read_date_basis": "last_seen",
    "source": "https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data",
    "state": "sourced",
    "value": "US8425871071"
   },
   "jurisdiction": {
    "read_by": "EDGAR submissions API (issuer header as filed) (stateOfIncorporation)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://data.sec.gov/submissions/CIK0000092122.json",
    "state": "sourced",
    "value": "United States — Delaware"
   },
   "lei": {
    "read_by": "GLEIF ISIN-to-LEI mapping file (daily), LEI by exact ISIN",
    "read_date": "2026-11-08",
    "read_date_basis": "the field",
    "source": "https://mapping.gleif.org/api/v2/isin-lei/latest/download (ISIN US8425871071)",
    "state": "sourced",
    "value": "549300FC3G3YU2FBZD92"
   },
   "name": {
    "read_by": "EDGAR submissions API (issuer header as filed)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://data.sec.gov/submissions/CIK0000092122.json",
    "state": "sourced",
    "value": "SOUTHERN CO"
   },
   "sector": {
    "read_by": "EDGAR submissions API (issuer header as filed) (SIC code as assigned by the SEC)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://data.sec.gov/submissions/CIK0000092122.json",
    "state": "sourced",
    "value": "4911 Electric Services"
   },
   "security_type": {
    "read_by": "EDGAR submissions API (issuer header as filed)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://data.sec.gov/submissions/CIK0000092122.json",
    "state": "sourced",
    "value": "Corporate"
   },
   "segment": {
    "market": "US",
    "state": "not_on_record"
   },
   "ticker": {
    "read_by": "EDGAR company_tickers_exchange.json (SEC list of exchange-listed filers)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://www.sec.gov/files/company_tickers_exchange.json",
    "state": "sourced",
    "value": "SO"
   },
   "website": {
    "market": "US",
    "state": "not_on_record"
   }
  },
  "licensed": {
   "columns": [
    "licensor",
    "entitlement",
    "title",
    "date",
    "source"
   ],
   "rows": [],
   "rule": "A licensed row is served only to an agent whose firm holds that licence (licensor, entitlement). No licensed row is loaded."
  },
  "lifecycle": {
   "delisting": [],
   "domicile_change": {
    "market": "US",
    "reason": "EDGAR states no dated change of state of incorporation on a filing line",
    "state": "not_on_record"
   },
   "listing": [
    {
     "date": "2025-11-06",
     "source": "https://www.sec.gov/Archives/edgar/data/92122/000009212225000096/so2025equityunits8-a.htm",
     "title": "8-A12B — 8-A12B"
    },
    {
     "date": "2025-11-07",
     "source": "https://www.sec.gov/Archives/edgar/data/92122/000087666125000850/SOMN110725.pdf",
     "title": "CERT — NYSE CERTIFICATION"
    }
   ],
   "name_change": [],
   "segment_move": {
    "market": "US",
    "reason": "the exchanges' tier transfers are not EDGAR filings",
    "state": "not_on_record"
   }
  },
  "market": "US",
  "node": "us-cm-kg",
  "numbers_hash": "sha256:1e91a186cf2cc196f64e64aef961ba570ab479b069ee2adf250c34ce7c4faa8e",
  "open_research": {
   "read_date": "2026-11-11",
   "rows": [],
   "state": "none_found"
  },
  "orderability": {
   "chapter_as_of": "2026-11-04",
   "client_categories": [],
   "determinable": false,
   "read": {
    "chapter": "https://mcp.us-cm-kg.ai/book/aio.json",
    "door": "https://mcp.us-cm-kg.ai/mcp",
    "tool": "get_orderability"
   },
   "reason": "the chapter's orderability section carries no client_categories: the outcome cannot name its client category",
   "rule_version": "acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1",
   "section": "us.aio.v8"
  },
  "record": {
   "as_of": "2026-11-08",
   "url": "https://mcp.us-cm-kg.ai/record/NYSE/SO",
   "version": 1
  },
  "schema": "research-numbers v0.1 (USR-01, 2026-11-11)",
  "status": {
   "read_date": "2026-11-08",
   "source": "https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts",
   "value": "listed, not halted"
  }
 },
 "numbers_hash": "sha256:1e91a186cf2cc196f64e64aef961ba570ab479b069ee2adf250c34ce7c4faa8e",
 "path": "/us/NYSE/SO",
 "schema": "research-page v0.1 (USR-02, 2026-11-11)",
 "sections": [
  {
   "id": "identity",
   "text": "The issuer is SOUTHERN CO, listed on NYSE under ticker SO, with ISIN US8425871071 and LEI 549300FC3G3YU2FBZD92. Its security type is Corporate, its sector is 4911 Electric Services, and its jurisdiction is United States — Delaware. Its segment is not on the record. Its listing status is listed, not halted.",
   "title": "Identity and listing"
  },
  {
   "id": "disclosure",
   "text": "The record holds 150 filings in the twelve months to 2026-11-08, across 55 filing days. The median gap between filing days is 3.0 days. The latest filing is dated 2026-11-06, two days before the record date, and is of type regulatory_filing. Across NYSE the median cadence gap is 6.0 days, the median filings are 64.0, and the median latency is 4.0 days. Across 4911 Electric Services the median cadence gap is 4.5 days, the median filings are 73.0, and the median latency is 4.0 days. The filings by type are 100 directors_dealings, 23 regulatory_filing, 8 corporate_news, 8 results, 5 agm_egm, 4 prospectus, 1 ad_hoc, and 1 director_change.",
   "title": "The disclosure read"
  },
  {
   "id": "auditor",
   "text": "The auditor of record is not on the record, because the latest annual report cover carries no dei:AuditorName tag, and its location is not on the record. The record holds no auditor changes.",
   "title": "Auditor"
  },
  {
   "id": "events",
   "text": "The record holds listing lines dated 2025-11-06 and 2025-11-07. It holds no delisting, no name change, and no segment move; the segment move is not on the record because the exchanges' tier transfers are not EDGAR filings. The domicile change is not on the record, because EDGAR states no dated change of state of incorporation on a filing line. The halt flag reads listed, not halted.",
   "title": "Events and halts"
  },
  {
   "id": "orderability",
   "text": "The orderability outcome is not determinable. The chapter's orderability section carries no client categories, so the outcome cannot name its client category. The rule version is acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1, and the chapter is as of 2026-11-04.",
   "title": "Orderability"
  },
  {
   "id": "coverage",
   "text": "The issuer's investor-relations page names 22 research houses: Argus Research, Barclays, BMO Capital Markets, BTIG, Citi, Evercore ISI, Goldman Sachs, Jefferies, J.P. Morgan, KeyBanc Capital Markets, Ladenburg Thalmann, Mizuho Securities, Morgan Stanley, Morningstar, Raymond James, RBC Capital Markets, Scotiabank, Seaport Global Securities, T.D. Securities, UBS, Wells Fargo, and Wolfe Research.",
   "title": "Coverage"
  },
  {
   "id": "open_research",
   "text": "No openly published research notes were found on the record.",
   "title": "Open research"
  },
  {
   "id": "licensed",
   "text": "Licensed research: none loaded. A licensed row is served only to an agent whose firm holds that licence (licensor, entitlement). No licensed row is loaded.",
   "title": "Licensed"
  },
  {
   "id": "depth",
   "text": "The record holds the issuer's sealed years 2021, 2022, 2023, 2024, 2025, and 2026. The market's vintage is sealed, with an earliest sealed date of 2021-01-04. The live record began on 2026-09-12.",
   "title": "As-of depth"
  },
  {
   "id": "sources",
   "text": "9 source pages are named on this page; every value above carries its own source page and read date in the numbers.",
   "title": "Sources"
  }
 ],
 "sources": [
  {
   "for": "identity.exchange",
   "source": "https://www.sec.gov/files/company_tickers_exchange.json"
  },
  {
   "for": "identity.isin",
   "source": "https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data"
  },
  {
   "for": "identity.jurisdiction",
   "source": "https://data.sec.gov/submissions/CIK0000092122.json"
  },
  {
   "for": "identity.lei",
   "source": "https://mapping.gleif.org/api/v2/isin-lei/latest/download"
  },
  {
   "for": "the disclosure lines",
   "source": "https://mcp.us-cm-kg.ai/events/NYSE/SO"
  },
  {
   "for": "the halt flag",
   "source": "https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts"
  },
  {
   "for": "the orderability chapter",
   "source": "https://mcp.us-cm-kg.ai/book/aio.json"
  },
  {
   "for": "coverage",
   "source": "https://investor.southerncompany.com/shareowner-services/analyst-coverage/default.aspx"
  },
  {
   "for": "the record",
   "source": "https://mcp.us-cm-kg.ai/record/NYSE/SO"
  }
 ],
 "title": "SOUTHERN CO (SO) — research page",
 "writer": {
  "by": "Claude through the platform account, Haiku class; one pass; checked against the numbers",
  "engine": "claude-haiku-5-5"
 }
}